US4683249AExpiredUtility

Amidines and a method of manufacturing the same

54
Assignee: SAN APRO KABUSHIKI KAISHAPriority: Apr 9, 1985Filed: Apr 8, 1986Granted: Jul 28, 1987
Est. expiryApr 9, 2005(expired)· nominal 20-yr term from priority
Inventors:Keiichi NakataniShohzo OhnishiTadamasa Kurosaki
C07D 487/04C08G 59/5053C08G 59/68C08G 18/2063
54
PatentIndex Score
8
Cited by
2
References
8
Claims

Abstract

Amidines of the formula: ##STR1## wherein R 1 and R 2 are alkyl groups and the sum of the carbons in R 1 and R 2 is from 2 to 16 are produced by cyanoethylation of the lactam: ##STR2## wherein R 1 and R 2 are as defined above, followed by reduction and, finally, cyclization by dehydration. The compounds produced are useful for curing epoxy and urethane resins.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. An amidine compound represented by the following formula ##STR8## wherein each R 1  and R 2  is independently an alkyl group having C 1  to C 14  or benzyl group and the sum of carbon atoms is 2 to 16. 
     
     
       2. The amidine compound of claim 1, wherein R 1  and R 2  are --CH 3 . 
     
     
       3. The manufacturing method of an amidine compound having the formula ##STR9## which comprises cyanoethylation of the lactam compound represented by the following formula (2), the reduction and finally, cyclization by dehydration: ##STR10## wherein each of R 1  and R 2  is independently an alkyl group having C 1  to C 14  or benzyl group and the sum of carbon atoms is 2 to 16. 
     
     
       4. The manufacturing method of claim 3, wherein R 1  and R 2  are --CH 3 . 
     
     
       5. The application method of curing epoxy resins which comprises curing said epoxy resins in the presence of an amidine compound having the following formula, or its salts: ##STR11## wherein each of R 1  and R 2  is independently an alkyl group having C 1  to C 14  or benzyl group and the sum of carbon atoms is 2 to 16. 
     
     
       6. The method of claim 5, wherein R 1  and R 2  are --CH 3 . 
     
     
       7. The application method of hardening isocyanate resin which comprises hardening said isocyanate resin in the presence of an amidine compound having the following formula or its salts: ##STR12## wherein each of R 1  and R 2  is independently an alkyl group having C 1  to C 14  or a benzyl group and the sum of carbon atoms is 2 to 16. 
     
     
       8. The application method of claim 7, wherein R 1  and R 2  are --CH 3 .

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